File boiler control unit burns fuses. Automation for gas boilers: troubleshooting problems with the sparer. The boiler does not turn on - there is no indication

Hello everyone! I apologize for such a long silence, this is all guilty of New Year holidays. By the way, happy New Year !!!
And so: after replacing the gas valve, the boiler began to issue an error 02 is a low water level in the system. Two considerations appeared: either the water level sensor is to blame, it stands upside down next to the heat exchanger, or the pump. There was no sense to nor the sensor, since I do not know the resistance of the working sensor, but the pump winding was in the cliff! I could not restore the winding, the new pump is 3900r. Tried to adapt the winding from another pump, and from the fan, but everything is unsuccessful!
After replacing the pump, the boiler earned without any mistakes!
Because of the jump, thefts all that was involved in the boiler, it suffered a gas valve and the pump, the brains turned out to be whole, as they feed from the impulse IP. But the boiler is satisfied with 1.6 years, he worked without complaints, and the assembly is excellent almost all parts of stainlessness .. But why are there 3 ampere fuses inside the boiler ???? The boiler consumes very little included it in the network through the lamp 100W lamp gone into the floor of the heat. I replaced the fuse at 1mar, it works for the second day.
The scheme of the boiler was found so and failed, but made measurements of the resistance of new coils of the gas valves, and the pump.!
Gas valve coils: 5.4 com - 2pcs
Modulator Coil: 206 Ohm
Pump: 236 ohms
The pump has a capacity of 2.5 μF 400V
Duch sensors work simply: when water gets, closes!
Flame sensor: 50-80 com.
Close the topic! Thank you all for participating ....

From this article, you will learn what problems can occur in the automation of gas boilers, why it is not possible to ignite the stall, because of which the boiler can be disconnected without reason, and most importantly, we will understand what actions must be taken to diagnose and eliminate this malfunction.

Owners of non-volatile gas boilers are probably familiar to the situation when for some reason you cannot miss the boiler, or a lot of time is spent on the ignition. In this case, the problem lies in the automation of the boiler.

To date, the Eurosit 630 gas valve 630 is most often used in domestic and imported gas equipment. It is it that performs the functions of maintaining a given coolant temperature and in case of an emergency, it carries out a complete overlap of gas supply to the burners. Further launch of boilers with such automation is possible only manually. However, it is not always the reason for the emergency shutdown of the boiler is a real accident.

Let's try to deal with this on the example of Zhytomyr-3 boiler. From automation in it, it provides protection against the disappearance of the flame on the stall and the traction disorders.

Note:All gas supplies must be carried out exclusively by representatives of specialized organizations that have appropriate permits. Therefore, this article is provided solely for informational purposes. Also, this article will help to control the work of the master and, perhaps, will save you from the need to purchase unnecessary spare parts.

We will define that we will be called the ralkign of the fist. The EUROSIT 630 valve control knob allows you to translate the boiler in three main modes:

disabled;
ignition;
temperature adjustment (1-7).

To ignite the pilot burner (stobnant), it is necessary to translate the control knob to the ignition position (spark), click on it and using the Piezorozal button to ignite the pilot burner. Next, the handle is held for a few seconds (no more than 30) and is released. The stall must continue to burn. This we will be called the ralkign of the stobnant. If the spinner is moving - you need to repeat the procedure several times. If it does not help - you need to look for a fault.

At the moment of ignition, the flame is heating the thermocouple, which in turn produces EMF (approximately 25 mV for good SIT thermocouple), which comes through the sensor circuit (sensors) of automation to the electromagnetic valve.

Pressing the gas valve handle, we manually open the electromagnetic valve, feeding the gas to the stall, which, in case of proper operation of the equipment, is held in the EDC produced by the thermocouple and remains in the open position after the handle is released. Thermocouple itself performs the function of protection against the disappearance of the flame on the stall. Sensors in the chains are normally closed and when they trigger their contacts, providing a complete shutdown of the boiler.

Preparation for work

To carry out work on the definition and elimination of problems with the sparer, we will need the following tool:

horn keys number 9, 10, 12;
pliers;
multimeter;
flat slot;
alcohol.

Getting to work

To determine the cause of the malfunction, check the thermocouple chain - the electromagnetic valve. To begin with check the thrust sensor. In this boiler, it is located on the gas duct. To do this, remove the two terminals from the sensor.

We clic down two terminals with each other, they must connect tightly (for this you can squeeze them a bit).

We try to produce a spare stamp. In case it managed to do, the cause of the malfunction in the thrust sensor. However, do not rush to change it. To begin with check it.

Note: In this work, we dismantle the sensor in order to show the features of its installation on the boiler and labeling. To check it is not necessary.

We unscrew the two screws fastening the thrust sensor to the boiler gas pipe.

Please note that the sensor is not attached close to the body of the gas plant, but is installed on paronite gaskets. This is necessary in order to reduce the heating of the sensor through its contact with the case, as well as to ensure the gap between the hole in the gas duct and the plane of the sensor.

We inspect the sensor. His contacts must be tight on the housing. They should not be oxidation. The nominal sensor (the temperature at which the sensor contact disks) in this case is 75 ° C (designation on the L75C case).

Check the thrust sensor with a tester, measuring its resistance. It must be minimal (equal to the impact resistance) - 1-2 ohm. If the sensor is not nicknamed, the replacement is unambiguously needed to (with the corresponding response temperature).

If the sensor managed to call, wipe the sensor contacts and the chain terminals with alcohol, press them with pliers and dried. Mount the sensor in place and connect it. We try to make a span.

If the ignition managed to produce, the cause of the fault was found and eliminated.

Be sure after the ignition of the main burner needs to be checked. To do this, you can bring your hand to the place where the thrust sensor is installed. From this opening should not go warm. If this happens - it is necessary to eliminate the reason that causes insufficient traction. The sensor is triggered correctly.

Attention! Operate the boiler with a faulty chimney is categorically prohibited!

Remove the terminals from the contacts of the burden and measure the resistance of the chain. It must be no more than 3 ohms.

If this condition is observed, produce the following actions. Key number 9, unscrew the thermocouple fastening nut to the burden. The key number 12, we unscrew the turnover to the floor, which consists of two parts: a brass sleeve and plastic insert.

We take out the plastic insert with the contacts and unscrew the part completely.

We check the thermocouple. We attach it directly to the electromagnetic valve (the place where the burden was installed). Fix it with key number 9.

We produce a spinner spinner. If it failed to produce - the cause of the malfunction is most likely in the thermocouple. The electromagnetic valve fails to be extremely rare.

We will examine the thermocouple. In some cases, the thermocouple is repaired. It happens that the thermocouple contact disappears. This is not a reason for replacement, just supper it.

It is important that the dielectric gasket is a must.

Make sure the thermocouple is correctly installed in the flame of the furniture. The tip of the thermocouple must be immersed in the flame.

To configure the position of the thermocouple relative to the flame, the supplier must be released the key number 10 the fastening nut of the thermocouple to the pilot burner. By moving the thermocouple, you need to install it in the correct position and fix the key number 10.

To make the final verdict on replacement, you can measure the EMH, generated by a thermocouple. To do this, it is necessary to locate the stobnant, and, holding the valve handle pressed, measure the EDC between the contact of the thermocouple and its body. The optimal value should be at least 18 mV. If the thermocouple is good - clean the alcohol details of the burrier, as well as the protector of the thermocouple. Especially if it had to do.

We collect the burrier in the reverse order, connect the thermocouple to it. It should not crimp the details. Efforts should be enough to ensure reliable contact. Crush the terminals of the pliers and, rub them with alcohol, try to produce a ignition.

The execution of all of the above operations will certainly help you eliminate faults with your boiler.

Another reason for problems with the ignition may be insufficient gas pressure on the stall. This is due to clogging the nozzle. For its cleanings, it is necessary key number 10 to release the fastening nut of the stobnant and extract the jetwork.

Tip: you can easily cut the stall so that it is easier to extract the jetwork.

Remove the housing of the residential copper wire. Hole disorder is not allowed!

At the moments of the most intensive gas consumption, the pressure in the central trunk tube may fall. Accordingly, the gas pressure on the stalk can also decrease. To do this, you may need to adjust the gas pressure on the stall. We unscrew the screw fastening of the decorative lining and remove it.

The setting is performed by rotating the screw on the valve. When it turns it counterclockwise, the gas pressure on the stalk increases.

These tips will help you deal with ignition problems of your boiler. In practice, the most common is the problems with contacts, and not with sensors. Because, if with each time a spinner, the stobnant has to keep the valve handle everything longer and longer, we advise you to simply clean the contacts and climb the automation terminals. In order to avoid valid problems with the operation of automation, we recommend that the boiler is cleaning on time.

Of this boiler repair specialist is difficult to find. Therefore, it is important to understand them yourself, for the master is really required not always and many problems can be eliminated. Consider a list of boiler faults that covers all possible breakdowns. The article is designed for a non-specialist, and an ordinary person who undermined the elimination of such problems.

To eliminate this malfunction of the gas boiler may be several ways. Simplest - check whether the boiler is turned on or knocked out the machine . If it does not help, you need to remove the housing of the boiler and inspect its insides for the presence of a short circuit. Perhaps there is some kind of smell or something flowed. You need to check if all the wires and sensors are located in their places. If everything is in order, then you need to go to the inspection of fuses in the electronic board. Making sure the fuse burned down, you just need to replace it with a new one. If the new fuse immediately burned down, then it is necessary to call the masters, as it means some serious breakdown that it is unlikely to be fixed. The specialist needs to be called and in the case when all the fuses are normal, it indicates that the problem is not in them.

Pay attention to the varistor. It is designed to protect the boiler from voltage drops. If there was some kind of differential, then the varistor will bloom and only his small part will remain. Because of this, the boiler may not be included. The solution of this boiler malfunction is to simply turn on the varistor.

Such a gas boiler malfunction is possible when the sensor circuit breaks in a room thermostat or a boiler thermostat. It is necessary to see if the room sensor is not turned off. If it is turned off, then the mechanical thermostat needs to be simply turned on, and in electronic it is possible to replace the batteries.

The boiler has many security systems that are included in one chain. When one of the systems failed, the voltage does not arrive. If a room thermostat or a boiler thermostat has failed, then the errors in the panel will not be, and the error is displayed on the other breakdown. Therefore, when the boiler simply does not want to turn on, first of all you need to check the thermostats and start repairing the boiler from it.

The boiler is also not turned on, but the problem is not in it

This may be due to the clogging of the filter under the boiler. You need to find it and closing both filter cranes to unscrew the nut and pull out the grid from there, which you need to rinse with water and put it back. When cleaning the filter, as when performing any other actions, be sure to turn off the boiler.

Filter rough cleaning

The reason may be in the pump that does not supply heat for two reasons:

due to accumulation of air;
screw the rotor.

To determine the cause of the pump malfunction in the gas boiler, you first need to check the operation of the rotor. To do this, you need to unscrew the nut on the pump, from which there should be a little water, after which insert the scum if the characteristic sound is heard, then everything is in order with the rotor. If not, then you should check the screwdriver for the slots or do it using a special key.

When the air is clusted in the pump, you need to open the air vent and release air. The air vent is a rotating or up cap, the sound of the outgoing air must be heard when released.

The pressure gauge arrow is close to the red zone.

When the cold system has pressure from a red zone, then it is necessary to turn on the boiler and warm it up. If with a small heating, the pressure is much risen from 0.7 to 1.5 bars, it will mean that the expansion tank must add air, due to its loss. To do this, reset the system pressure to zero (open the crane and drain some of the water) and with the help of a conventional car pump or the compressor to pump up 1.3 bar, then bring the system pressure to 1.5 bars.

How to repair Code Faults Boiler?

Error overheating boiler

A gas boiler malfunction in the form of overheating may occur due to lack of circulation. In this case, you need to check the pump and filter. It may have broken the thermostat overheating.

Low pressure in the system

If the pressure does not rise when the boiler is heated, then the tightness of the system can simply be impaired and you need to pull the connections, then add slightly pressure. If this problem arose almost immediately after installing the boiler, it means you need to simply remove the air through the automatic air vent and add some water.

Missing gas boiler

If a boiler with an open combustion chamber, it's enough to see if she did not score with something. If the combustion chamber is closed, then condensate dripping from the outer tube, falling into the inner and freezing, in the winter season, turns into an icicle, overlapping air access to the boiler. To eliminate this problem, it is necessary to pour the resulting suspicion of hot water. Also can get into the chimney another foreign object

Ignition boiler does not burn the flame

This indicates a malfunction of the gas valve in the boiler. To make sure that you can screw the hose and whether gas is served. If there is gas, you should call a specialist who will replace this valve.

The boiler is burned, but the flame goes right away

In this case, the panel may show a malfunction of the gas boiler in the form of a lack of ionization current. You need to check it, turning on the boiler, turning the plug, via the phase. If nothing has changed, then the operation of the ionization current is impaired, due to any electrical work in the house. If, this is due to voltage jumps and a stabilizer is needed.

The panel is issued incorrect errors

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